dubbo spi

[huifer]

• [*] I have searched the issues of this repository and believe that this is not a duplicate.
• [*] I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

• Dubbo version: 2.7.2
• Operating System version: windows10(18362.175)
• Java version: jdk12.0.1

Steps to reproduce this issue

1. create interface

@SPI
public interface Robot {
    void sayHello();
}

2. implements Roobot

public class Bumblebee implements Robot {

    @Override
    public void sayHello() {
        System.out.println("Hello, I am Bumblebee.");
    }
}

public class OptimusPrime implements Robot {

    @Override
    public void sayHello() {
        System.out.println("Hello, I am Optimus Prime.");
    }
}

3. create a folder
   /MEAT-INF/dubbo/

optimusPrime=com.huifer.dubbo.client.spi.OptimusPrime
bumblebee=com.huifer.dubbo.client.spi.Bumblebee

4. run demo

public class SpiDemo {

    public static void main(String[] args) {

        ExtensionLoader<Robot> extensionLoader =
                ExtensionLoader.getExtensionLoader(Robot.class);
        Robot optimusPrime = extensionLoader.getExtension("optimusPrime");
        optimusPrime.sayHello();
        Robot bumblebee = extensionLoader.getExtension("bumblebee");
        bumblebee.sayHello();

    }

}

Pls. provide GitHub address to reproduce this issue.

Expected Result

Console output

Hello, I am Optimus Prime.
Hello, I am Bumblebee.

Actual Result

• It has an exception and does not find optimusPrime

Exception in thread "main" java.lang.IllegalStateException: No such extension com.huifer.dubbo.client.spi.Robot by name optimusPrime
	at org.apache.dubbo.common.extension.ExtensionLoader.findException(ExtensionLoader.java:520)
	at org.apache.dubbo.common.extension.ExtensionLoader.createExtension(ExtensionLoader.java:527)
	at org.apache.dubbo.common.extension.ExtensionLoader.getExtension(ExtensionLoader.java:351)
	at com.huifer.dubbo.client.spi.SpiDemo.main(SpiDemo.java:18)

[huifer]

/MEAT-INF/dubbo/ be revised as /META-INF/dubbo/